D-Link DGS-3212SR Инструкция по эксплуатации онлайн [178/224] 40542

DGS-3212SR Stackable Gigabit Layer 2 Switch

Figure 7- 13. Rx Error Analysis (table) window

Select the desired Switch using the Unit drop-down menu and the desired port using the Port drop-down menu. The Time

Interval field sets the interval at which the error statistics are updated.

The following fields can be set or are displayed:

Parameter Description

Time Interval <1s> Select the desired setting between 1s and 60s, where "s" stands for seconds. The

default value is one second.

Record Number

<200>

Select number of times the Switch will be polled between 20 and 200. The default

value is 200.

Crc Error

Counts otherwise valid packets that did not end on a byte (octet) boundary.

UnderSize The number of packets detected that are less than the minimum permitted packets

size of 64 bytes and have a good CRC. Undersize packets usually indicate collision

fragments, a normal network occurrence.

OverSize Counts packets received that were longer than 1518 octets, or if a VLAN frame is

1522 octets, and less than the MAX_PKT_LEN. Internally, MAX_PKT_LEN is equal to

1522.

Fragment The number of packets less than 64 bytes with either bad framing or an invalid CRC.

These are normally the result of collisions.

Jabber The number of packets with lengths more than the MAX_PKT_LEN bytes. Internally,

MAX_PKT_LEN is equal to 1522.

Drop

The number of packets that are dropped by this port since the last Switch reboot.

Show/Hide Check whether or not to display Crc Error, Under Size, Over Size, Fragment, Jabber,

and Drop errors.

Clear

Clicking this button clears all statistics counters on this window.

View Table Clicking this button instructs the Switch to display a table rather than a line graph.

View Line Chart Clicking this button instructs the Switch to display a line graph rather than a table.

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